Carriage operated controlling mechanism for accounting machines



Jan. 27, 1953 R. A. CHRISTIAN ETAL CARRIAGE OPERATED CONTROLLING MECHANISM FOR ACCOUNTING MACHINES 2 SHEETS-SHEET 1 Filed June 27, 1951 THEIR ATTORNEYS 27, 1953 R A. CHRISTIAN m-AL 2,626,750

CARRIAGE OPERATEID CONTROLLING MECHANISM FOR ACCOUNTING MACHINES Filed June 27, 1951 2 SHEETS-SHEET 2 INVENTORS RAYMOND A. CHRISTIAN HERBERT O. JOHNSON a PAUL H. WILLIAMS THEIR ATTORNEYS Patented Jan. 27, 1953 UNITED STATES PATENT OFFICE CARRIAGE OPERATED CONTROLLING MECHANISM FOR ACCOUNTING MA- CHINE S Application June 27, 1951, Serial No. 233,868

7 Claims.

The present invention relates to accounting machines and is particularly directed to the controlling mechanisms of such machines.

One object of the present invention is the provision of an improved mechanism for effecting an automatic operation of the machine.

Another object is to provide an improved mechanism for controlling the functioning of the automatic operating mechanism in overdraft operations.

A further object is the provision of an improved sensing mechanism for rendering the overdraft control mechanism effective.

With these and incidental objects in view, the invention includes certain novel features of construction and combinations of parts, a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings:

Fig. 1 is a detail view in front elevation of a portion of the mechanism controlled by the traveling carriage for initiating automatic operations of the machine.

Fig. 2 is a detail view, in side elevation, of additional mechanism for initiating and controlling automatic operations of the machine.

Fig. 3 is an enlarged detail view of the sensing mechanism for the overdraft control mechanism.

Fig. 4 is a detail view, in side elevation, of the operating mechanism for the sensing mechanism shown in Fig. 3.

Fig. 5 is a detail view of the cam and lever for operating the overdraft sensing mechanism.

Fig. 6 is a detail view of the homing cam and lever for the main shaft.

Description The present invention may preferably be incorporated in a machine of the type disclosed in the co-pending application of Raymond A. Christian et al., Serial'Number 790,032, filed December 6, 1947, for Accounting Machines, to which reference may be had for a complete description of mechanism not pertinent to the present invention and therefore not described in detail in the present application.

The machine chosen to illustrate the present invention has a laterally-movable traveling carriage with a stop bar ll removably mounted on the front surface of an escapement rack 2E! secured to the framework of said carriage. The bar H is arranged to adjustably support function'control stops 2L and-22 in predetermined columnar positions along its length. The stops 2| and 22 have depending forward tabulating stop lugs I8 and I9, respectively, said lug i8 having secured therein the tenon of a small-diameter stud 23, and said lug !9 having secured therein the tenon of a large-diameter stud 24. The studs 23 and 24 are arranged to coact with a rounded nose 25 on a control lever 25, as will be explained later, for initiating automatic operating cycles of the machine. It will be noted that the lever 25 has a slot 28, which engages a stationary stud 2?, to shiftably and pivotally mount said lever. A spring 29 is tensioned to urge the lever 26 toward the right (Fig. 1) and clockwise to normally maintain said lever in its right-hand position, as shown here, and in yielding contact with a stop rod supported by the framework of the machine.

The lever 26 carries a stud 3|, which engages a slot in an upward extension of a lever 32 pivotally supported by a stud 33 secured in the machine framework. The lever 32 has a shoulder 34, which coacts with a flat surface 35 (Figs. 1 and 2) on the upper end of a hook 36 pivoted at its lower end on a stud 31 in the rear end of a lever 38 in turn pivoted on a stud 39 secured in the machine framework. A spring 46 urges the lever 38 clockwise to normally maintain a square stud 40, carried thereby, in engagement with a shoulder on a machine release slide 4! shiftably mounted by means of two slots therein, in cooperation with stationary studs [6 secured in the machine framework, only one of said slots and said studs being shown herein. The slide 4| carries a stud 42, which engages a slot in the upper end of a crank 43 secured on a short shaft 44 journaled in the machine framework. Also secured on the shaft 44 is an arm- 45 carrying a stud 41, which engages a slot ina forward extension of an arm 48 secured on a short shaft 49 journaled in the machine framework. A comparatively strong spring 59 (Fig. 2), one end of which is connected to the arm 45, urges said arm counter-clockwise and, through the crank 43, urges the slide 4| forwardly to normally maintain the shoulder onsaid slide in yielding engagement with the square stud as, which stud normally obstructs such forward movement of said slide.

When forward movement of the slide 4| (Fig. 2) is obstructed by the stud 40, a tripping arm 5|, secured on the shaft 49, is maintained in the path of a downward extension of a clutch control arm 52 free on a hub 53 carried by a disk 55, said hub being secured on a main cam shaft 54 journaled in the framework of the machine. The arm 52 has gear teeth in its upper portion, which mesh with corresponding gear teeth in a headed portion 56 of a clutch engaging stud or dog 51 journaled in a bushing 58 carried by the disk 55. A spring 59, tensioned between the arm 52 and the disk 55, urges said arm clockwise to normally maintain a downward extension thereof in yielding contact with the arm as shown here. When the arm 52 and the dog 5'! (Fig. 2) are maintained in untripped positions, as shown here, a cut-away flat portion 60 of said dog is positioned so as to provide operating clearance for the periphery of a driving disk w6| free on the main shaft 54 and continuously rotated clockwise through a train of gearing which connects said disk to the main power source for operating the machine, in this case electric motor, not shown.

Under certain conditions, when the traveling carriage arrives at predetermined columnar positions, mechanism, to be described presently, lifts the hook 35 (Figs. 1 and 2) to rock the lever 33 counter-clockwise, against the action of the spring 45, to disengage the stud ill from the shoulder in the slide 4|. This releases said slide 41 and connected mechanism to the action of the spring se, which immediately rocks the arm 48, the shaft 55, and the tripping arm 5| clockwise, to disengage the lower end of said tripping arm from the extension of the clutch control arm 52, to free said latter arm to the action of the spring 53. The spring 55 immediately rocks the arm 52 clockwise, said arm in turn rocking the dog 5? counter-clockwise in unison therewith to engage the flat portion 55 of said dog with one of a series of uniformly-spaced notches 62 in the periphery of the disk iii, to operatively connect said disk 6i to the disk 55. ously revolved clockwise by the operating motor, immediately picks up the disk 55 and the main cam shaft 55 and revolves them in unison therewith.

When the disk 55 and the main shaft 54 near the end of a complete clockwise revolution, a restoring cam (not shown), secured to said shaft 5 engages a roller on an extension 63 of the arm 58 and restores said arm counter-clockwise against the action of the spring 50 to move the tripping arm 5| into the path of the control arm 52 and to simultaneously restore the tripping slide 4! rearwardly, where its shoulder is again engaged by the stud 4!], which retains said slide and connected parts in restored condition, as shown in Fig. 2. The tripping arm 5| obstructs further clockwise movement of the arm 52, whereupon continued independent rotation of the disk 55 causes the dog 51 to be restored clockwise to disengaged position, as shown here, to disconnect said disk 55 from the driving disk 6| to terminate machine operation, which norm-ally requires one uninterrupted clockwise revolution of the main shaft 54, except in the case of over- ;lraft operations, which require two such revoluions.

Secured on the main cam shaft 54 is a homing cam 64 (Figs. 2 and 6), which cooperates with a roller 55 mounted on an arm 65 free on a stud 89 fast in the machine framework, said roller being maintained in yielding contact with the periphery of said cam 54 by a comparatively strong spring 61, which urges said arm 55 clockwise. The roller 65, cooperating with the cam 65, assists the main shaft 54 to home position, after the clutch has been disengaged, as ex plained above, and a notch in the periphery of said cam 64, cooperating with said roller in home position, yieldingly maintains said shaft, in h position, as shown here.

The disk Bl, which is continu- Referring to Fig. l, the lever 26 carries a stud 63, which pivotally supports a hook 69, urged counter-clockwise by a spring 10, to normally maintain a stud l I, carried by said hook, in yielding contact with a shoulder formed on the upper surface of said lever 26. A downward extension 12 of the hook 69 is arranged to cooperate with a shoulder 13 on a tabulating control lever 75, only the right-hand end of which is shown here, said lever 14 being mounted in a similar manner to the lever 28 by means of a slot therein, which engages a stationary stud. A spring (not shown), which functions similarly to the spring 29, urges said lever 14 clockwise and toward the right to normally maintain said lever in its home position, as shown here in full lines, in which position an upper right-hand notch ll, cut in its lower surface, engages a square stationary stud 75. When the lever 14 is in home position, as shown here, the shoulder 13 is maintained out of coacting relationship with the downward extension 12 of the hook 69. The traveling carriage is released for tabulating movement by counterclockwise movement of the lever 14. which movement is effected by clockwise movement of a tabulating control lever 200 (Fig. 1). Clockwise movement of the lever causes a lifting pawl 20!, mounted thereon, to engage a downward projection 202 on the lever 14 to rock said lever upwardly or counter-clockwise against the action of its spring. Upward movement of the lever 14 disengages the notch 11 from the stud i5, whereupon said lever is immediately shifted toward the right by its spring to engage a lower left-hand notch I5 therein with the stud 15 to maintain said lever 14 in its effective position, as shown here in dot-and-dash lines.

When the traveling carriage arrives in a co lumnar position in which one of the studs 23 or 24 engages the nose 25, the lever 25 is rocked counter-clockwise or depressed against the action of its spring 29, to move the extension l2 into the path of the shoulder l3. Simultaneously with the depression of the lever 26, the tabulating stop lug It or 19 engages an abutment arm 2B3, operatively connected to the lever H3, in the manner fully disclosed in the co-pending application Serial Number 790,032, and shifts sa-id abutment arm and the lever 14 toward the left to terminate tabulating movement of the traveling carriage and to cause the shoulder 13, in cooperation with the extension 12, to shift the hook 59 and the lever 26 toward the left in unison therewith against the action of the spring 29. Lefthand shifting movement of the lever 25 causes the stud 3|, in cooperation with the slot in the ever 32, to rock said lever counter-clockwise on its pivot stud 33, whereupon the shoulder M, in cooperation with the surface 35, lifts the hook to render the clutch mechanism effective, as explained before, to initiate an automatic operation of the machine, under control of the traveling carriage in predetermined columnar posit-ions thereof.

Left-hand movement of the lever '74 moves the lower notch 76 in said lever beyond the stud l5, whereupon said lever is spring-returned clockwise or downwardly to engage the upper notch ll with said stud to restore said lever to its nor- 'mal position, as shown in full lines in Fig. 1.

This restoration of the lever '14 disengages the shoulder 13 from the extension l2, whereupon the spring 29 restores the lever 25 and connected parts toward the right to normal positions, as shown here.

Means is provided forrendering the automatic machine-releasing mechanism ineffective when a selected totalizer is in an overdrawn condition, to apprise the operator of this fact.

Mechanism which is controlled by the highest order wheel of a totalizer, when it moves one step from zero in a subtractive direction-that is, when the capacity of the totalizer is exceededrocks the surface 35 (Fig. 2) on the hook 36 out of the path of the shoulder 34, so that operation of the levers 2G and 32, in the manner explained above, will not shift said hook 36 upwardly to release the machine for an automatic operation.

Directing attention to Fig. 2, the upper end of the hook 36 has a vertical slot, which engages a stud I8 in an upward extension of a link I9, a downward extension of which has a stud 86, which engages a horizontal slot in the rear end of a bar BI mounted for horizontal sliding movement by means of parallel slots therein, in cooperation with fixed studs 32, only one of said slots and one of said studs being shown herein. The rear end of the link I9 is pivotally connected to a stud 83 in the forward end of a slide bar 84 mounted to shift horizontally by means of parallel slots therein in coopera tion with studs 85 secured in the totalizer framework 86. Secured in the forward end of the bar 8 (Fig, 2) is a stud 8], which cooperates with a foot-shaped upper extension of a lever E58 pivotally mounted on the stud 89. A forward extension of the lever as carries a roller 98 (see also Fig. 5), which cooperates with the periphery of a plate cam 5| secured to the main shaft 54.

In the beginning of machine operation, rotation of the cam SI, through the roller 99, rocks the lever 83 clockwise to shift the slide bar 84 rearwardly against the tension of a spring c2, to move a square stud 93 in the rearward end of said slide bar beyond the end of a blocking finger 94 pivotally mounted on the rearward stud 85. The finger 534 has an upward extension 95, bifurcated to receive a stud 96 in the lower end of a crank 97 secured on an overdraft control shaft 98 for an upper totalizer comprising a plurality of denominational order tota-lizer wheels 99.

Only the highest order totalizer wheel 99 is shown in Fig. 3, and this wheel will be described as representative of all of the totalizer wheels.

Each wheel 59 is secured to a hub IflI free on a totalizer shaft I89, which is rockably supported in the totalizer framework 86. Each of the totalizer wheels 99 has two sets of ten teeth each, which are engageabie with corresponding sets of teeth on the denominational actuator racks, not shown, for the purpose of entering values into the totalizer and for taking values out of said totalizer. Secured to the hub IIII, in fixed relationship to thewheel 99, is a transfer tripping cam I02, having diametrically opposed tripping teeth, which cooperate with the corresponding add and subtract transfer tripping pawls.

In all denominational orders, except the highest order, the diametrically-opposed tripping teeth on the cams I02 cooperate with the add and subtract tripping pawls in adding and subtracting operations to transfer tens values, in the usual manner. The tripping teeth also cooperate with the corresponding add-transfer pawls intotal and sub-total taking'operations to stopth'e' totalizer wheels in zero position-to'position the corresponding amount actuators and printing sectors in accordance with the values standing on said wheels. The highest order wheel 99, shown in Fig. 3, has no provision for transferring amounts to higher orders, but the diametricallyopposed tripping teeth on its cam [c2 cooperate with the corresponding add-transfer pawl in total and sub-total taking operations for locating said highest order wheel 99 in zero position, in such operations, Rotatably supported on a left-hand extension of the hub IBI is an overdraft shaft sensing cam I03, having diametrically-opposed stop teeth I84, which cooperate with a downwardly-extending tip I05 on a sensing finger I05 secured on the overdraft shaft 93.

Due to certain conditions which may occur, as will be explained later, it is necessary for the sensing cam I03 to be flexibly mounted so that it can move relatively to the totalizer wheel 99 and the tripping cam I82. This is accomplished by means of a stud Isl secured in said cam I03 and having a cut-away or fiat surface which rides in a notch I28 cut in the periphery of the tripping cam I62. A spring I86, tensioned between said stud It"! and a stud Iii: secured in the wheel $9, urges said sensing cam I63 clockwise to normally maintain the stud I81 in engagement with the downward wall of the notch I08, so that said cam I83 is free to yield in a counter-clockwise direction but is normally maintained in its home or normal position, as shown in Fig. 3.

Secured on the overdraft shaft 98 (Fig. l) is an arm H2 having a slot in its forward end which engages a stud H3 secured in a plate I I4 pivoted on a stud I I5 secured in the machine framework. A spring H6 urges the plate H4 counter-clockwise to normally maintain a rearward surface on said plate in yielding contact with a stop stud II'I secured in the machine framework. A wire link l 18 pivotally connects the plate II4 to a corresponding operating lever I20 pivotally supported between the side arms of a yoke I23 on a stud I'ZI secured in the framework of the machine, which stud also serves to pivotally support said yoke I23. A raised surface I22 on the lever I2!) is normally maintained in yielding contact with the bottom surface of the bail of the yoke I23, by the spring H6. The left arm of the yoke I23 has a downward extension supporting a roller I24, which ooacts with the camming surface on an upward extension of a lever I25 rotatably supported on a shaft I26 journaled in the machine framework. A downward extension of the lever I25 carries a roller I21, which cooperates with the periphery of a plate cam I23 secured on the main shaft 54.

The cam I28 and the shaft make one clockwise revolution each machine operation, causing the periphery of said cam, in cooperation with the roller 12?, to gradually rock said lever I25 counter-clockwise from the position shown here to its fully-moved position, during 216 degrees of movement of said cam I28. After this, the lever dwells in its moved position until the cam I23 and the shaft have completed 335 degrees of movement, after which said cam quickly restores said lever to its clockwise position, as shown here. The cam iii (Figs. 2 and 5), during the first 68 degrees of its movement, rocks the lever clockwise. Clockwise initial movement of lever 38 shifts the slide bar reaiwardly to move the stud 93 beyond the end of the finger S3 and to simultaneouslyinove the surface 35 on the-hook 36 out of the path of the shoulder 35 on-the lever 32 (see also Fig. 1'). After the slide bar 84 has been moved to its rearward position, initial counter-clockwise movement of the lever I25 (Fig. 4), as explained above, rocks the yoke I23 clockwise, and the bail of said yoke, in cooperation with the surface I22, carries the lever I20 clockwise in unison therewith. Clockwise movement of the lever I23, through the link I I 8, rocks the plate I I4 also clockwise, causing the stud I I3, coacting with the slot in the forward end of the arm II2, to rock said arm, the overdraft shaft 93, the sensing finger IE6, and the crank 91 (Figs. 2 and 3) clockwise in unison therewith to move the tip I65 of said finger I36 above the stop teeth IE4 on the cam I03.

Clockwise movement of the crank 91 rocks the finger 34 counter-clockwise from the position shown in Fig. 2 into the path of the stud 33, which, as explained above, is now held in its rearward position. While the finger IE6 is in its raised or clockwise position, actuation of the totalizer takes place, and, if during this actuation the highest order wheel 99 (Fig. 3) is moved one step in a reverse direction from zero position, as shown here, to 9 position, thus indicating that the totalizer is overdrawn, the tooth I36 will be moved into the path of the tip 585 of said finger I33.

Near the end of machine operation, after the cam 3i (Fig. has completed 320 degrees of movement, a declinin surface on said cam permits the spring 92 to return the slide bar 3 1 and the lever 88 forwardly and counterclockwise, respectively, until such forward movement of said slide is terminated by the square stud 33 contacting the end of the finger 3:2. Approximately concurrently with return movement of the slide bar 83, 335 degrees of rotation of the cam I28 (Fig. 4) brings a declining surface thereon opposite the roller I21, thus permitting the spring I it to restore the plate lid counter-clockwise, and said plate in turn simultaneously restores the arm II2, the shaft 38, the finger :36, and the crank 91 also counter-clockwise in unison therewith.

If the totalizer is not in an overdrawn condition, the proper one of the teeth I 35 will remain out of the path of the tip 35 of the finger I33, and thus said finger and connected parts will be free to return fully to their normal positions, as shown here. This causes the crank 91 to rock the finger 9d clockwise out of the path of the stud 93, to permit the slide bar 83 to return forwardly under influence of the cam 3!, to move the surface 35 on the hook 3'6 back into the path of the shoulder 34. If the totalizer is in an overdrawn condition, the tooth I6 3 will be positioned in the path of the tip I35, as explained above, and consequently return counter-clockwise movement of the finger I36, the shaft 98, and the crank 91 will be obstructed. In this case, the crank 31 will retain the finger 94 in the path of the stud 93, and, as a result, the slide bar S 3 will be retained in its rearward position, thus holding the surface 35 out of the path of the shoulder 34. Under these conditions, the small diameter stud 23 (Fig. 1) on the stop 2I, coacting with the nose 25, will rock the lever 25 counter-clockwise to move the extension 12 into the path of the shoulder 13, whereupon termination of the tabulating movement of the traveling carriage will shift the levers 14 and 26 toward the left to rock the lever 32 counter-clockwise, in the manner explained before. However, inasmuch as the surface 35 of the hook 33 is out of the path of the shoulder 34 on the lever 32, counter-clockwise movement of said lever will have no effect upon said hook, and consequently in this case there will be no automatic operation of the machine when the totalizer is in an overdrawn condition.

In certain business systems to which the present machine is adaptable, it is desirable that automatic operations of the machine may be initiated by the traveling carriage in predetermined columnar positions thereof, regardless of whether or not the selected totalizer is in an overdrawn condition. This is effected by the large diameter stud 24 on the stop 22 (Fig. l), which, in cooperation with the nose 25, rocks the lever 26 a greater extent counter-clockwise than the stud 23, which greater movement not only moves the extension 12 into the path of the shoulder 13 but simultaneously conditions the machine for an automatic operation under influence of the traveling carriage, as will now be explained.

The lever 26 has in its right-hand end a stud I 30, which engages a camming slot in a lefthand extension of a bell crank I 3| free on a stud I32 secured in the machine framework. A downward extension of the bell crank I3! carries a stud I33, which engages a vertical slot in a plate i3 5 slidably mounted on a right-hand extension of the lever 32 by means of parallel slots I35 in said plate I34, in cooperation with corresponding studs I33 secured in said lever 32. Full counterclockwise movement of the lever 23, under influence of the large diameter stud 2 3, causes the stud I30, in cooperation with the slot in the bell crank I3I, to rock said bell crank its extreme extent of movement in a clockwise direction to cause the stud I33, in cooperation with the slot in the plate I 34, to shift said plate toward the left to move an upwardly-projecting shoulder I31 thereon beneath the surface 35 of the hook 36, which surface, as previously explained, is retained out of the path of the shoulder 34 in overdraft operations but remains in the vertical path of the shoulder I31. Counterclcckwise movement of the lever 26 moves the extension 12 of the hook 39 into the path of the shoulder 13, whereupon termination of tabulating movement of the traveling carriage shifts the levers 26 and 14 toward the left. This movement of the lever 26, through the stud 3i, rocks the lever 32 counter-clockwise, causing the shoulder I31, in cooperation with the surface 35, to lift the hook 315, in the manner explained previously, to initiate an automatic operation of the machine.

In other words, when the totalizer is in an overdrawn condition, the surface 35 on the hook 36 is retained out of the operating range of the shoulder 34 on the lever 32. However, said surface remains in the vertical operating range of the shoulder I31, and full left-hand shifting movement of the plate I34, under influence or" the large diameter stud 24, moves the shoulder I31 into coacting relationship with said surface to effect an automatic operation of the machine.

From the foregoing description, it should be apparent that, when the totalizer is not in an overdrawn condition, either of the studs 23 or 2 will initiate an automatic operation of the machine, under control of the traveling carriage in predetermined columnar positions thereof. In such operations, the larger diameter stud 2d shifts the shoulder I31 into the path of the surface the same as in overdraft operations. However, this is of no particular significance, as said surface is also in the path of the shoulder 34, which, in this case, is effective to lift the hook 33 to initiate an automatic machine operation. Likewise it should be apparent that in overdraft operations the smaller diameter stud 23 (Fig. 1) is ineffective to initiate an automatic machine operation. However, if such automatic operation is required, it may be effected by locating one of the large diameter studs 24 in relation to the proper columnar position of the traveling carriage.

Directing attention to Fig. 2, the bar 81 is operatively connected at its forward end to a Non- Automatic key (not shown but fully disclosed in the co-pending application Serial Number 790,032), depression of which key shifts said bar 8! rearwardly. Rearward movement of the bar 8|, through the link 19, rocks the hook 36 clockwise a sufiicient distance to move the surface 35 thereon out of the path of the shoulders 34 and 13! on the members 32 and 134, to disable the automatic operating mechanism at all times, when said Non-Automatic key is depressed.

The reason for the flexible mounting of the sensing cam I03 (Fig. 3) is that, under certain conditions in adding operations, it is possible that the transfer of a tens digit to the highest order will be delayed a suflicient length of time to permit the finger I06 to be restored counter-clockwise to normal position, as shown here, before such transfer takes place, and this is especially true when the transfer extends through several lower orders to the highest order. For example, assuming that the highest order wheel 59 is standing in 8 position and all the lower order wheels are standing at 9, the entering of a digit in the units order will cause a transfer to take place progressively through all the orders, including the highest order. In this case, there is sufficient lag or delay in the transferring movement of the highest order wheel to permit the ringer We to be restored counter-clockwise to normal position, as shown in Fig. 3, before such movement takes place. Under this condition, the tip :05 of said finger will be in the path of the tooth Hi4 and normally would obstruct transfer movement of said wheel 99 from 8 position to 9 position in an additive or clockwise direction. However, the flexible construction of the cam I63 permits the wheel 99 to move independently thereof the equivalent of one tooth space or one digit, from 8 position to 9 position. In the immediately succeeding operation, clockwise movement of the finger I06 moves the tip 105 out of the path of the teeth I04, to permit the cam I03 to be restored by the spring H19 clockwise to normal position, as shown in Fig. 3.

In the present adaptation, the mechanism for controlling automatic machine operations when the selected totalizer is overdrawn is shown in connection with only one totalizer. However, this feature is not limited to one or to any particular number of totalizers and therefore may be incorporated in as many totalizers as desired.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in various other forms.

What is claimed is:

1. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement and having an add-subtract totalizer, the combination of a device to operate the machine; means to drive the machine operating device; normally ineffective means to connect the machine operating device to the driving means; means including a releasable latch to render the connecting means effective; an element connected to the releasable latch; means controlled by the carriage in predetermined columnar positions and coacting with the element to release the latch to render the connecting means effective; means effective each machine operation to move the element out of coacting relationship with the means controlled by the carriage and. back into coacting relationship with said means; means controlled by the add-subtract totalizer when overdrawn to retain the element out of coacting relationship with the means controlled by the carriage; and means including a Slide operatively connected to the means controlled by the carriage, said slide movable by said means controlled by the carriage when said carriage is tabulated to certain of said predetermined columnar positions into coacting relationship with the element to cause said element to release the latch to render the connecting means effective.

2. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement and having an add-subtract totalizer, the combination of a device to operate the machine; means to drive the device; a clutch to connect the driving means to the operating device; means including a spring-loaded slide to control the clutch; means including a latch normally effective to hold the slide against spring action to retain the clutch disengaged; a movable element connected to the latch; means controlled by the carriage in predetermined columnar positions thereof and coacting with the element to render the latch ineffective to cause the clutch to be engaged to initiate machine operation; means effective each machine operation to move the element out of coacting relationship with the means controlled by the carriage and back into coacting relationship therewith; means controlled by the add-subtract totalizer when in an overdrawn condition to obstruct return movement of the element into coacting relationship with the means controlled by the carriage; and means operatively connected to the means controlled by the carriage and movable thereby when the carriage is tabulated to certain of said predetermined columnar positions into coacting relationship with the element to render the clutch effective to initiate operation of the machine when the add-subtract totalizer is in an overdrawn condition.

3. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement and having an add-subtract totalizer, the combination of means to release the machine for operation; means operated by the traveling carriage in predetermined columnar positions thereof to actuate the machine releasing means; means including a member rockably and shiftably mounted on the machine and constructed and arranged to be rocked by the carriage when in said predetermined columnar positions into coactin relationship with the actuating means to be shifted thereby; an operating element connected to the releasing means; a part operatively connected to the member and coacting with the element and effective upon shifting of said member to cause said element to operate the releasing means; means to move the element out of and back into coacting relatio'nship with the part during each machine operation; means controlled by the add-subtract totaliz'er when overdrawn to retain the element out of coacting relationship with the part to render the releasing means ineffective; and means mounted on the part and movable by rocking movement of the member, when the traveling carriage is tabulated to certain of said predetermined columnar positions, into coacting relationship with the element to cause said element to operate the releasing means to initiate an automatic operation of the machine when the totalizer is in an overdrawn condition.

4. In a machine of the class described having a traveling carriage mounted thereon for tabulating movement and having an add-subtract totalizer, the combination of means to release the machine for operation; means including an element for operating the releasing means; a member rockably and shiftably mounted on the machine; means operated by the carriage in predetermined columnar positions thereof to shift the member; means operated by the carriage in said predetermined columnar positions to rock the member into coacting relationship with the shifting means; a part operatively connected to the member and coasting with the element upon shifting movement of said member to cause said member to operate the releasing means to initiate an automatic machineoperation; means effective each machine operation to move the element out of and back into coacting relationship with said part; means rendered effective by the add-subtract totalizer when overdrawn to retain the element out of coacting relationship with the part to prevent automatic machine operation; a slide shiftably mounted on the part for movement into and out of coacting relationship with the element, but normally out of coacting relationship therewith; and means whereby rocking movement of the member, when the carriage is tabulated to certain of said predetermined columnar positions, shiftsthe slide into coacting relationship with the element, whereupon shifting movement of saidmember causes said slide to coact with the element to release the machine for an automatic operation, when the totalizer is overdrawn.

5. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement, and having an add-subtract totalizer, the combination of spring-actuated means to release the-machine for operation; a latch normally effective to retain the releasing means against releasing movement; a latch-operating element connected to the latch; a member mounted for rocking and shifting movement on the machine; means to shift the member, said member normally out of coacting relationship with said shifting means; means on the carriage to impart two difierent extents of rocking movement to the member, either of which is efiective toqmove said member into coacting relationship with the shifting means; a part operatively'connected to themember and coacting with the element upon shifting movement of said member to render the latch ineifective to free the releasing means for releasing movement; means to move the element out'o'f and into coacting relationship with the part each machine operation; means operated by the add-subtract totaliz'er when in'an automatic release of the machine; and means mounted on the part and movable by the member, when it receives a certain one of its two extents of rocking movement, into coacting relationship with the element to effect automatic release of the machine for operation when the totalizer is in an overdrawn condition.

6. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement to various columnar positions and having an add-subtract totalizer, the combination of means to release the machine for operation; yieldable means to actuate the releasin means; a latch normally efiective to retain the releasing means against the action of the yieldable means; a latch-operating element connected to the latch; a member mounted 'for rocking and shifting movement; means to shift the member, said member normally out of coacting relationship with said shifting means; a first means located in a particular columnar position on the traveling carriage and coacting with the member to rock it a certain extent into coacting relationship with the shifting means, said first means also effective to actuate said shifting means; a second means located in another columnar position on the traveling carriage and coacting with the member to rock it another extent into coacting relationship with the shifting means, said second means also effective to actuate said shifting means; a part operatively connected to the member and coacting with the element upon shifting movement of said member to disengage the latch from the releasing means to initiate an automatic machine operation; means to move the element out of and into coacting relationship with the part each machine operation; and means mounted on the part and movable by the member, when it is rocked by the second means, into coacting relationship with the element to effect an automatic operation of the machine when the add-subtract totalizer is in an overdrawn condition.

7. In a machine of the class described, having a traveling carriage mounted thereon for tabulating movement to various columnar positions, and having an add-subtract totalizen the combination of a main operating mechanism for the machine; a power source, a clutch mechanism operative to connect the power source to the main operating mechanism to cause the machine to perform cycles of operation; clutch control means; 'yieldable'means to actuate the clutch control means; a latch normally efiective to hold the clutch control means against the action of the yieldable means to cause said clutch control means to maintain the clutch inoperative; a latch operating element connected to the latch; a member mounted for rocking and shifting movement on the machine; means to shift the member, said member normally out of coacting relationship With said shifting means; a first means located in a particular columnar position on the traveling carriage and coacting with the member to rock it a certain extent into coacting relationship with the shifting means, saidfirst means also eiTectiv'e to actuate said shifting means; a second means located in another columnar position on the traveling carriage and coacting with the member to rock it another extent into coacting relationship with the shift ing means, said second means also 'efiective to actuate said shifting means; a part operatively connected to the member and coacting with the element upon shifting movement of said memher to disengage the latch from the clutch control means to render the clutch mechanism operative to cause the machine to perform an automatic cycle of operation; means to move the element out of and into coacting relationship with the part each machine operation; means operated by the add-subtract totalizer when in an overdrawn condition to retain the element out of coacting relationship with the part to prevent an automatic cycle of operation; and means mounted on the part and movable by the member, when it is rocked by the second means, into coasting relationship with the element to effect an automatic cycle of operation, when the add-subtract totalizer is in an overdrawn condition.

RAYMOND A. CHRISTIAN.

HERBERT C. JOHNSON.

PAUL H. WILLIAMS.

14 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

